Hi
Maybe I not picking up on your question right but will the address be what you set up in the Irc controller in the field bus tab. I have only setup devicenet to a Irc from scratch but I worked on a few that had been set up on profibus before i worked on them. If you press Abb, then system I think ,then I/o, and select a group input or a single Input and map it to you field bus address.
I am only doing this From memory so it may be a little out but not much.
I hope I have understood your question.
Donnchadh